/* 侧边栏容器样式 */
.event-sidebar {
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    padding: 1.5rem;
    position: sticky;
    top: 20px;
    height: fit-content;
}

/* 注册框样式 */
.registration-box {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    border-top: 4px solid #e74c3c;
}

.registration-box h3 {
    color: #2c3e50;
    margin-top: 0;
    font-size: 1.25rem;
}

.registration-box p {
    color: #555;
    margin: 0.5rem 0 1rem;
    font-size: 0.95rem;
}

.registration-box .button.primary {
    display: block;
    text-align: center;
    margin: 1rem 0;
}

.small-text {
    font-size: 0.85rem;
    color: #777;
    text-align: center;
}

/* 主办单位样式 */
.organizer-info {
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
    margin-bottom: 1.5rem;
}

.organizer-info h3 {
    color: #2c3e50;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.organizer-info p {
    color: #555;
    font-size: 0.95rem;
    margin: 0.5rem 0;
}

/* 快速链接样式 */
.quick-links {
    margin-bottom: 1.5rem;
}

.quick-links h3 {
    color: #2c3e50;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.quick-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.quick-links li {
    margin-bottom: 0.5rem;
}

.quick-links a {
    color: #3498db;
    text-decoration: none;
    font-size: 0.95rem;
    display: block;
    padding: 0.5rem 0;
    transition: color 0.2s;
}

.quick-links a:hover {
    color: #e74c3c;
}

/* 联系方式样式 */
.contact-info h3 {
    color: #2c3e50;
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.contact-info p {
    color: #555;
    font-size: 0.95rem;
    margin: 0.5rem 0;
    line-height: 1.5;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .event-sidebar {
        position: static;
        margin-top: 2rem;
    }
    
    .registration-box {
        padding: 1.25rem;
    }
}